Dan Stevens, Ricky Gervais, dinosaurs and London are the stars of the Night at the Museum 3 trailer

The first trailer for Night at the Museum 3 has landed and there's a lot going on.

Let's start with the new additions – Dan Stevens, Ben Kingsley and Rebel Wilson – who all appear in the footage. Stevens has returned to his Downton roots, employing a plummy accent to play Sir Lancelot who defends the group from a giant dinosaur skeleton entombed in cavernous museum corridors.

Meanwhile, Wilson is the museum's bored security guard (with a dodgy cockney accent), while Kingsley appears as an Egyptian Pharaoh.

Then there are the familiar faces... Ben Stiller returns as harried Larry Daley, flanked by Robin Williams' Teddy Roosevelt, Owen Wilson's Jedidiah and American Museum of Natural History director Dr McPhee, our own Ricky Gervais.

And did we mention that the action's switched to London as the gang try to save themselves from imminent destruction? Look out for plenty of shots of Big Ben, Tower Bridge, the London Eye and much, much more. Have a watch below...

Night at the Museum: Secret of the Tomb hits UK cinemas on 19 December 2014